Intensive combustion should be used in water heater. Heat convective surface is better than heat radiantsurface for heat transfer in water heater.
在热水器上应采用强化燃烧方式，尽量采用对流受热面，减少辐射受热面。
2
The upper Radiant Heating surface is covered with a very fine multi-faceted acute-angle silicon surface manufactured in New Mexico.
上部辐射采暖表面覆盖着一个非常精细的多面性急性角在新墨西哥州生产硅表面。
3
The paper describes the measuring technique of infrared radiant heat flux density reached the surface or absorbed by the surface of spacecraft during thermal balance test.